body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dd,dt,input,form,fieldset,legend{
	margin: 0;
	padding: 0;
}
*{
	box-sizing: border-box;
}
html,body{
	height: 100%;
}
img{
	/* 去除img下方间距 */
	/* vertical-align: middle; */
	display: block;
	border: 0;
}
input{
	outline: none;
}
a{
	text-decoration: none;/* 去除超链接下划线 */
	color: #333;
}
ul,ol,li{
	list-style: none;
}
h1,h2,h3,h4,h5,h6{
	font-weight: normal;
}
.fl{
	float: left;
}
.fr{
	float: right;
}
.clr::after{
	content: ".";
	display: block;
	height: 0;
	clear: both;
	overflow: hidden;
	visibility: hidden;
}
.clr{
	zoom: 1;
}
.hide{
    display: none;
}
.show{
    display: block;
}